pocket universe

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English[edit]

English Wikipedia has an article on:
Wikipedia

Noun[edit]

pocket universe (plural pocket universes)

  1. A hypothetical realm in inflationary theory, only one of which would contain our observable universe.
    Synonym: bubble universe
  2. (gaming) A small, self-contained fictional universe that borrows concepts from established universes.
    • 2013, Frank Garcia, Mark Phillips, Science Fiction Television Series, 1990-2004, page 118:
      I set it in a 'pocket universe' based on role-playing games.
    • 2014, Evan Torner, William J. White, Immersive Gameplay, page 79:
      [] the simulationist sought a game system that created "a little pocket universe without fudging."